Suddenly get ERROR_SECURITY_ERROR

Running 1.3.7 for many years with no problems. Have not changed or Modified anything for years and only added products but not in the last few months so nothing has been changed in months. No customers can login getting ERROR_SECURITY_ERROR. I know the site is running old version but it has worked and did not feel comfortable ever about upgraded to latest version. Any help at this critical time would be greatly appreciated.

Could you look in the Tools ... Server Info ... and see what version information shows?

Then can you compare the files in the:
/includes/modules/pages/login

to a clean copy of v1.3.7 and see if they are the same?

I would check to see if the server's PHP was upgraded.

~Melanie

I just upgraded from 1.3.8a to 1.3.9g. On login attempts I get the same ERROR_SECURITY_ERROR message.

Server Info: Zen Cart 1.3.9g
Database Patch Level: 1.3.9g
PHP Version: 4.4.9

Not sure what else you need from that panel.

ahaynes106:

I just upgraded from 1.3.8a to 1.3.9g. On login attempts I get the same ERROR_SECURITY_ERROR message.

Server Info: Zen Cart 1.3.9g
Database Patch Level: 1.3.9g
PHP Version: 4.4.9

Not sure what else you need from that panel.

Betting the necessary upgrades to your custom template files were not completed. Check all custom template files and merge your changes in to fresh copies from the version you are upgrading to.

~Melanie

mprough:

Betting the necessary upgrades to your custom template files were not completed. Check all custom template files and merge your changes in to fresh copies from the version you are upgrading to.

~Melanie

Correct, From the statement above to the orginal poster...

Then can you compare the files in the:
/includes/modules/pages/login

...my orginals were different due to a checkout addon I had used. All seems well now. Thanks!